(LTV Ziņu dienesta korespondente) Each fifth tick, which has been investigated in the laboratory of the Latvian Infectology Centre, contains borrelia or the initiator of Lyme disease, Latvian Television reported July 14. Only 2% of the ticks tested were infected with tick encephalitis. It doesn't mean that everyone who gets these ticks inevitably gets sick. But medics remind the public to be careful outdoors and take suitable precautions when in areas potentially containing ticks. 727 ticks have been removed by July 11 at Riga East Clinical University Hospital (RAKUS). Not all removed ticks are analyzed as it is a paid-for service. Tick encephalitis is an acute central nervous system disease. The most serious cases end up with death or disability, and may also include headache, fatigue, trouble balancing or other consequences.